121022222012 has 24 divisors (see below), whose sum is σ = 224347495680. Its totient is φ = 56926126080.

The previous prime is 121022221973. The next prime is 121022222023. The reversal of 121022222012 is 210222220121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245189 + ... + 549692.

It is an arithmetic number, because the mean of its divisors is an integer number (9347812320).

Almost surely, 2^121022222012 is an apocalyptic number.

It is an amenable number.

121022222012 is a deficient number, since it is larger than the sum of its proper divisors (103325273668).

121022222012 is a wasteful number, since it uses less digits than its factorization.

121022222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797141 (or 797139 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 121022222012 its reverse (210222220121), we get a palindrome (331244442133).

The spelling of 121022222012 in words is "one hundred twenty-one billion, twenty-two million, two hundred twenty-two thousand, twelve".